I'm using this style code to get an image to float, resize to larger windows but not exceed maximum. Works exactly as I would like in Sigil and iBooks. But Calibre's reader and Readium both display no change in image size, and nearby text actually overlaps the image.

I'm using this style code to get an image to float, resize to larger windows but not exceed maximum. Works exactly as I would like in Sigil and iBooks. But Calibre's reader and Readium both display no change in image size, and nearby text actually overlaps the image.